Reenforced lead-tipped gasket



SePt- 30, 1930- c. H. MccoRMAcK 1,777,101

REENFORCED LEAD TIIPED GASKET Filed March 2, 1929 iNVENTOR ATTORNEY Patented Sept. 30, 1930 UNITED STATES PATENT OFFICE BEENFORCED LEAD-TIPPED GASKET Application led March 2,

The invention generally relates to gaskets and more particularly to that t e known as lead tipped ring gaskets whlc are commonly employed in unthreaded pipe couplings and similar uses.

These gaskets commonly comprise a body of deformable material such as rubber, tipped with a tip ring of a metal relatively soft and having good seating qualities, such as lead, a suitable liner strip of duck or thev like frequentl bein interposed between the lrubber and t e lea The rubbervportions of these gaskets have a tendency -to swell and lose their shape after a short period of lmnserandihe-same soft characteristic of the lead which occasions efliciency as to seating quality, occasions inefficiency because of the ease with which the lead tip ring can be de formed in use, and even in factory handling, rendering the gasket unfit for eiiicient service. Pipe lines are commonly laid in rough and wild country and in the course of operations the gaskets come in for very rou h handlin during which the deficiency of icing rea ily deformed is accentuated and very troublesome, the gaskets sometimes being stretched to such a degree` that -sections must be cut out to reduce them to the proper diameter. Therefore, it is thel object of my present invention to produce a asket embodying all of the advantages of e cient seating qualities present in the gaskets above referred to, but.which is so reenforced as to protect it against deforming tendencies and strains.

'Io the attainment of the aforesaid objects and ends, thevinvention still further resides inthe novel details of construction, combination and arrangement of pa'rts, all of which 40 will be rst fully described-in the following detailed description, then be particularly pointed out in the appended claim, reference being had to the accompanying draw ings, in which Figure 1 is a perspectiveview of a gasket embodying my invention.

Figure 2 is a vertical cross section of the gasket shown in Figure 1.

Figure 3 is avertical cross section illustrating a modified form of the invention.

1929. Serial No. 343,921.

In the drawing, in which like numerals of reference indicate like parts in all of the figures, 1 designates the main or body portion of the gasket which is formed of soft deformable material such as rubber. A lead tip 2 is fitted over the body 1 and is shaped to continue the converging sides lines thereof as indicated in the figures of the drawing. The usual interposed` liner strip is indicated at 3.'

The gasket,vbriefly described above, ,is of conventional form and of itself forms no part of my present invention. In the use of such gaskets, however, diliculties are occasioned by the tendencies of the rubber to become enlarged and deformed after use and also due to the readiness with which the relatively soft lead-tip may be deformed by handlinghor rough usage.

It is t e purpose of my invention, therefore, to so reenforce the gasket structure as to overcome the disadvantages referred to above. To this end I imbed a harder metal ring 4 of steel or copper or the like within the lead tipped ring 2 as indicated in Figures 2 and 3 of the drawing. This ring may b e continuous or bent to sha e with its ends joined as indicatedat 5 if esired.

In Figure 3 of the drawing I have illustrated a modification of the invention in which both the lead tipped ring 2 andthe rubber body 1 are provided with reenforcing rings. In this figure a suitable reenforcing ring 6 is shown as imbedded in the gasket body 1 and, like the ring 4, thesame may be formed integral or bent to shape with its ends joined as at 7.

It is to beunderstood that the invention is not limited to the employment of a reenforce ring which is formed of metal having circular cross section. The ring may be 1n the nature of a thin fiat circular band or shaped otherwise in cross section if desired., It lwill also be obvious that the showing of the ring as tient to shape with ends jomed is but one exemplary showin which comprehends the simpler and pre erred form of a continuous unbroken reenforce ring.

A gasket constructed as herein disclosed will be found more durable and lasting in use since they are not subject to the ready deformation now experienced in gaskets which are not reenforced as herein disclosed.

From the foregoing description, taken in Connection with the accompanyinodrawing, it is thought the novel details o? construction, the manner of use and the advantages of my invention Will be readily apparent to those skilled in the art to which it relates.

What I claim is:

A gasket comprising a ring of deformable material, a tip ring of relatively soft ductile metal itted over a part of the ring of deformable material, and a considerably less ductile reenforce ring imbedded in the said tip ring.

CLARENCE H. MCCORMACK. 

